228 BOTANY. 
lower leaves ovate, often slightly cordate at base, upper ones lanceolate 
undulate on margin ; inflorescence paniculate; racemes few-flowered, termi- 
nating the branches; stamens 3, exserted; fruit 5-angled or winged, club- 
shaped ; flowering racemes short, but much elongated when in fruit (378 
a, Arizona, Loew). 
PHYTOLACCE. 
Rivina* Lavis, Linn.—Herbaceous above, sub-shrubby below, branch- 
ing from the base; stem striate and with the leaves puberulent; leaves 
broadly ovate or ovate-cordate, on slender petioles half their length; flowers 
purplish; calyx-lobes ovate, as long as the four stamens; anthers oblong; 
filaments thickish; style 1-2’’ long, somewhat curved; stigma capitate, 
oblique, distinctly papillose—In clefts of rocks, Southern Arizona (582). 
POLYGONACE. 
By Pror. T. C. PORTER. 
Errogonum aLatum, Torr. (Sitgreaves’s Rep. p. 168, t. 8).—Perennial ; 
root stout and blackish ; stem erect, 1 to 3 feet high, arising from a short, 
thick caudex, clothed with the remains of leaves, subflexuous, leafy ; 
branches alternate, erect, paniculate; radical leaves spatulate or oblanceo- 
late, 2 to 4 inches long, 3 to 5 lines wide, hirsute; peduncles terminal, in 
threes; flowers yellowish; involucre solitary, campanulate, 5-cleft; peri- 
gonia glabrous, segments equal; achenia 4 lines long, winged nearly to the 
base; wings broad, thin; seeds ovate, triangular—Colorado, 1873, Wolf 
(806); Willow Spring, Arizona, at 7,195 feet elevation, 1874, Rothrock 
(204). ; 
Errocoxum Jamesu, Benth—Stems 5 to 12 inches high, cespitose, 
from a branched, few-leaved, woody caudex; radical leaves spatulate-ovate 
or narrowly lanceolate, cauline in verticils of 3 to 5, spatulate or oblong, 
*Rrvina, Plum.—Flowers hermaphrodite, 3-bracted; calyx 4-parted, the equal lobes sub- 
corolline. Corolla none. Stamens 4-8, sub-hypogynous, the 4 exterior alternate with the lacinie of 
the calyx. Filaments filiform-subulate. Anthers ovate-cordate to narrowly oblong. One-celled ovary 
simple, with a single amphitropous ovule fixed by the base. The longish style sublateral; capitate 
stigma papillose ; sub-globose berry at length dry. Seed vertical, sub-globose or ovoid, the testa crusta- 
ceous; albumen central, mealy, surrounded by the ring-like embryo; radicle descending; cotyledons 
membranaceous, exterior one larger and embracing the inner; sub-shrubby [or, as in my species, rather 
herbaceous, except at the slightly woody base]. Mogquin, in DC, Prod. vol. 13, pars 2, p. 10. 
